High Quality Uv Marker in Leak- Proof Polypropylene Body. to be Used for the Secret Marking of Possessions or for Making Invisible Notes That Can Only be Seen Under Uv Light. with Line Colour Print & Full-Colour Print Options, Your Brand, Message or Custom Design Will be Flawlessly Printed on This Sleek & Practical Pen. Print Methods: Full Colour Print,Line Colour Print Refil Colour Range - Ink Colour: Multi; Colour: White; Minimum Quantity: 250